Great Britain’s NETS must continue to adapt and be developed so power can be transported from source to demand, reliably and efficiently.

East of England boundaries

The East of England region includes the counties of Norfolk and Suffolk. 
North of England boundaries

The north of England transmission region includes the transmission network between the Scottish border and the north Midlands. This includes the upper north boundaries B7a and B8. 
North Wales and the Midlands boundaries

The Western transmission region includes boundaries in the Midlands and the north of Wales.
Scottish boundaries

The onshore transmission network in Scotland is owned by SSEN Transmission and SP Transmission. 

The Scottish NETS is divided into 7 boundaries:
South Wales and South England boundaries

The region includes the high demand area of London, generation around the Thames estuary, and the long set of circuits that run around the south coast and South Wales.

Boundary charts source data

Download the source data from all of our published ETYS 2023 boundary charts in a tabulated format.

ETYS 2023 boundary charts source data